Link copied Sign up for FREE health tips to live a long and happy life SUBSCRIBE Invalid email When you subscribe we will use the information you provide to send you these newsletters. Sometimes they'll include recommendations for other related newsletters or services we offer. Our Privacy Notice explains more about how we use your data, and your rights. You can unsubscribe at any time. Melatonin is a hormone that regulates the sleep–wake cycle. Evidence suggests that taking melatonin supplements is a simple and effective ways to fall asleep faster. Studies have shown taking melatonin before bed improved sleep quality and energy the next day and helped people fall asleep faster. Nutritional Therapist, Lisa Borg at Pulse Light Clinic spoke exclusively with Express.co.uk to offer her insight on melatonin’s ability to aid sleep.